Understand

Get in

the main reason to get in Muang Ngeun is Passing the border From Ban Huay Kon (Thailand)
Meny don't know but the border with Thailand ( Ban Huay Kon – Muang Ngeun ) is open for a while (year or two ) also for foreigns .
you can get a visa on arivel an the both sides of the border. ( you need to bring a picture for the visa )
the main problem is that the bus to UdomXai is at 12 from The Bus station.
So if you don't want to spend a night In Muang Ngeun ( It is not so bad thing ) you Should pass the border in the morning.

by bus \ Sawngthaew

Get around

you can go around by foot ( anyway you don't have a choice.. )

See

They are few tempels in the viliges
As the temples in Muang Ngeun are Tai Lue, they have long banners hanging from the rafters, & a set of wooden weapons on either side of the altar (either on the floor or placed high up in the rafters). To see this in other parts of Laos, one would have to travel to places like Ban Viengkeo in Hongsa, Muang Sing, rural Oudomxay province or Ou Tai & Ou Neua in Phongsaly.